docs: def _getFromTime(self, atDate=None):
          """
          What was the time of this event?  Due to time zones that depends what
          day we are talking about.  If no day is given, assume today.
          """
          if atDate is None:
              atDate = timezone.localdate(timezone=self.tz)
          return getLocalTime(atDate, self.time_from, self.tz)